Liquid pump for hydrocarbon motors



Mar. 20, 1923.

G. B. MAEGLY LI QUI'D PUMP FOR HYDROCARBON MOTORS Original F1 led Jan. 26.

l A Tia/awn Fatented iii/tar, 2% H9231 STATES an errant GEORGE B. MAEGLY, OF KANSAS CITY, MISSOURI, ASSIGNOR T0 STROMBERG MGTOR DEVICES COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

LIQUID PUMP FOR HYDROCARBON MOTORS.

Application filed January 26, 1916, Serial N0. 74,368. Renewed July 29, 1922. serial'lto. 578,510.

To all whom it may concern: I

Be it known that I, Gnonen B. MAEGLY, a citizenof the United States, residing at Kansas City, in the county of Jackson and State of Missouri, have invented certain new and useful Improvements in Liquid Pumps for Hydrocarbon Motors; and I do declare the following tobe a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

This invention relates to liquid pumps for hydro-carbon motors and the principal object is to provide a simple and positive means for utilizing the normal suction or vacuum created by the motor as the ower medium required to circulate the oil t rough the lubricating system, the water through the cooling system 0i to elevate the gasoline for the carbureter. v 7

While this device is adapted to perform any one 'of these several functions, in the present instance I show it in connection with the lubricating system, and doingv the Work performed by the ordinary engine driven oil pump.

A great many of the less expensive motor cars produced today have neither oil nor Waterpumps for the proper circulation of these respective mediums, but depend on the splash system for the lubrication, and the thermo-siphon principle for the water circulation for cooling, and it is primarily to provide a pump that may be used economically with such low priced cars that I have devised the present improvements.

In the accompanying drawings, wherein the preferred form of the invention is illustrated:

Fig. I is a side elevation of a motor equipped with my improvement, showing the pump adapted for distributing 011 through the motor bearings.

Fig. 11 is an enlarged longitudinal section of the pump.

Fig. 111 is a similar View of the vacuum end, showing the parts as they appear when the pump has finished its suction stroke and is ready to return.

Referring more in detail to the drawings:

1 designates a motor of any ordinary type, comprlsing the engine cylinder 2, and the intake manifold 3. Leadlng from the manifold 3 is a conduit 4 which communicates with the pump cylinder 5, comprising the heads 66 and within which a double piston 7-7 is adapted to work.

Carried by and spacing the piston 77' is a spring housing 8, the outer end of which is preferably located withina socket 9 in the outer piston member 7' while its inner end is threaded into and opens through the inner cylinder 7 and is slidably projected over a barrel 11 which is threaded into the inner cylinder head 6. Located within the inner end of the barrel 11 is a valve cup 12, the body portion of which is spaced from the barrel sufliciently to form an annular chamber 13 and the outer end of which is extended to form a clamp flange 14 that overlies the outer end of the barrel 11,, and is. held to the end of said barrel by a clamp nut 15, thevalve cup being provided with ports 17 that open into the annular chamber 13, and the barrel 11 with ports 18 which afiord constant communication between the interior of the barrel and the vacuum chain: her 19 of the cylinder, so that when vacuum is on the valve it is also in the cylinder chamber.

Threaded into the inner end of the clamp nut 15 is a nipple 21, having a channel 22 extending longitudinally therethrough and terminatlngat one end in the valve seat 23 and at the opposite end in the base of cup 24: in the neck 25, to which the conduit 4: that leads from the intake manifold of the engine is connected.

Slidably mounted in the valve'cup 12 is a valve head 27, having a rubber or like pad 28 therein adapted for engaging the outer end of the valve seat 23 at the inner end I ward travel of the stem and the valve plug stem back away that is carried thereby, and the inner end of the collar is flanged to afford an extended bearing on the end of the guide tube 36 and for engaging the end of the valve cup neck The space between the valve 36 and spring housing 8 is sufficient to carry a oonvolute spring 39 which seats in the socket 9 1n the valve member 7 and bears againstthe outer end of the barrel 11, to normally, yleldingly urge the piston member 7 outwardly n the direction of intake to the pump cylinder, and the space between the neck of nipple 21 and the valve cup 12 is sufiicient to carry a spring 40 which is adapted to snap the valve from the valve seat as soon as the ports 17 are uncovered to prevent atterin The vziiziium chamber of the cyllnder is provided with a relief valve, the form here shown comprising a cup 41, having a reduced neck 42 threaded into an open ng 45 in the inner cylinder head 6. Slidably mounted in said neck is a valve stem 44, having a channel 45 openlng to the mterior of the cylinder and laterally through the stem to atmosphere, the lnner end of the stem being located within the cylinder and having a head 46 adapted for bearing against the cylinder head 6 to limit the outward movement of the stem; the channel 45 opening laterally at such apoint that when the head 44 is in engagement with the cylinder head, the outer mouth of the channel will be closely adjacent the endof the neck so that slight inward movement of the stem will carry the mouth into the neck and close the channel. On the outer end of the stem is a head 48 and surrounding the stem and bearing against the neck and head, and located within the cup 49 at the end of said neck, is a spring 50 which yieldingly urges the stem outwardly to keep the channel 45 open.

On the outer cylinder head 6' s a neck 52, and threaded into said neck is the base arm 53, of a T fitting 54, the other arms 55-56 of the fitting comprising valve chambers 57--58 which are connected by a channel 59 that is intersected by the channel 60 which leads therefrom to the interior of the pump cylinder.

Fitted within the outer end of the valve chamber 57, of the arm 55, is a nipple 62, the outer end of which carries a tube 63 which may lead to .a source of liquid supply, here shown to be the crank case of the meat/57 motor, the nipple 62 having a reduced chan nel 65, and the chamber being provided with a ball 66 which is adapted for 010s ing said chamber to prevent back flow to the supply source, but which is held from the fitting channel 59 by a pin 67, to insure against its stopping flow from the, supply source to the cylinder under the conditions hereinafter described.

liocated in the valve chamber 58 of the arm 56 is a ball-valve 69 which is adapted for closing the fitting channel 54 when there is suction in the direction of the cylinder and for stopping against the end of the nipple 71 so that the nipple channel is constantly open through the slot 72 in order that when fluid is forced from thecylinder it will lift the valve ball to permit flow into the fitting chamber and avoid interruption of flow through the nipple.

The nipple 71 carries a tube 73 which may lead to a' header 74-, from which the fluid may be distributed to various points: in the present case, to the several bearings of the motor.

Assuming the device to be constructed and assembled as described, when the motor is started the normal suction of the pistons creates a partial vacuum in the intake manifold. This vacuum is communicated through the conduit 4, channel 22 and valve ports 17 and 18 to the vacuum chamber 19 in the outer end of the cylinder.

As soon as the vacuum is created in the chamber 19 atmospheric pressure will force the relief valve 44 inwardly until the vent port 45 is covered by the wall of neck 42. This seals the chamber 19 and as the suction of the motor continues to maintain a vacuum or subnormal pressure in the chamber, atmospheric pressure will force liquid upwardly from the source of supply into the cylinder at the outer end of the piston and force the valve 44 inwardl against tension of spring 49, this movement continuing until the head 48 engages the outer end of the valve cup 41 and the sides of the valve cover the ports 45'. 1V ith this port closed the vacuum will be confined to the chamber-19 and the piston 7-7 will be sucked inwardly against the tension of the spring 39 until the compressible part 28 covers the valve seat 23. This of course shuts off the vacuum from the motor and the suction above the valve will continue to hold the vacuum channel closed.

\Vhile the vacuum is now shut off, there is still vacuum in the chamber 19 and this will continue the upward movement of the piston until the latter engages and forces the relief valve outwardly until the port 45 is uncovered and atmospheric pressure is permitted in the chamber.

\Vith normal pressure now established in chamber 19 and the vacuum stillshut oil,

rate-v the spring 39, which has been compressed, will tend to force the piston outwardly. This outward movement of the piston forces the oil outthrough channels 60 and 59, past the valve 69 and through the conduit 73.

As the piston reaches the end of the chamber the collar 34- engages the valve stem head 38 and pulls the valve 28 off its seat, As soon as the valve is pulled away sufliciently to uncover the ports 18, the vacuum above the valve will be broken or unconfined and the spring 40 will force the valve to its extremity, after which the process is repeated and continues.

For effective operation, the area of the vacuum channels 22 in the nipple 21 should be materially greater than the channel of the relief valve 44, because, in order that the reliefvalve may close and establish communication between atmosphere and the chamber 19 automatically, the pressure in the chamber 19 must be reduced more rapidly than the port in valve 44 will permit atmos here to replenish it.

aving thus described by invention, what I claim as new therein, and desire to secure by Letters-Patent, is

1. The combination with a source of vacuum, of a cylinder, a piston dividing the cylinder into separate fluid and vacuum chambers, valved supply and feed conduits leading to and from the fluid chamber, a conduit connecting the vacuum source with the vacuum chamber of the cylinder, a valve for controlling said conduit, a normally open valve connecting the vacuum chamber to atmospheres operable by vacuum from said source to close and seal the vacuum chamber and by the piston to break the seal,

and a spring for moving the piston when the seal is broken.

2. The combination with a source of vacuum, of a cylinder, a piston dividing the cylinder into separate fiuid and vacuum chambers and operable in one direction under influence of vacuum in the vacuum chamber, valved supply and feed conduits leading to and from the fluid chamber, a

valve for connecting the vacuum chamber with atmosphere, a spring normally retaining the valve open and yieldable under influence of vacuum in the cylinder, a conduit connecting the cylinder with the vacuum source, a valve automatically movable to ,close said vacuum conduit and operable by with atmosphere, aspring normally retaining the valve open and yieldable under influence of vacuum in the cylinder, a conduit connecting the cylinder with-the vacuum source, a valve automatically movable to close said vacuum conduit, a stem on said valve, having a head, a collar connected with said piston, slidable on said stem and adapted for engagement with said head to unseat the valve, and a spring for returning the piston.

4. The combination with a source of vacuum, of a cylinder, a piston dividing the cylinder into separate fluid and vacuum chambers and operable in one direction under influence of vacuum in the vacuum chamber, valved supply and feed conduits leading to and from the fluid chamber, a-

valve for connecting-the vacuum chamber with atmosphere, a spring normally retaining the valve open and yieldable under influence of vacuum in the cylinder, a conduit connecting the cylinder with the vacuum source, a barrel in the vacuum chamber, a housing connected with the piston and slidable on the barrel, a tube connected with the piston and slidable within the barrel, a spring in said housing bearing against the barrel to urge the piston outwardly, a collar on said tube, a valve in said barrel for con trolling the vacuum conduit, a stem on said, valve slidable in said collar, and a head on said stem engageable by the collar as the piston moves outwardly, to unseat the valve.

, 5. The combination with a source of vacuum, of a cylinder, a piston dividing the cylinder into separate fluid and vacuum chambers and operable in one direction under influence of vacuum in the vacuum chamber, valved supply and feed conduits leading to and fromthe fluid chamber, a valve for connecting the vacuum chamber with atmosphere, a spring normally retaining the valve open and yieldable under influence of vacuum in the cylinder, a conduit connecting the cylinder with the vacuum source, a barrel in and communicating with the vacuum chamber, a housing connected with the piston and slidable on the barrel, a spring in said housing bearing against the barrel and the piston to urge the piston outwardly, a tube connected with the piston and slidable in the barrel, a collar on said tube, a valve in said barrel for controlling the vacuum conduit, a stem on said valve slidable in said collar, and a head on the stem engageable by the collar, for the purpose set forth.

6. The combination with a source of vacuum, of a cylinder, a .piston dividing the cylinder into separate fluid and vacuum chambers, and operable in one direction under influence of vacuum-in the vacuum chamber, valve supply and feed conduits leading to and from the fluid chamber, a valve for connecting the vacuum chamber with atmosphere, a spring normally retaining the valve open and yieldable under influence of vacuum in the cylinder, a conduit connecting the cylinder with the vacuum source, a barrel in and communicating with the vacuum chamber, a housing connected withthe piston and slidable on the barrel, a spring in said housing lbearing against the barrel and the piston to urge the piston outwardly, a tube connected with the piston and slidable in the barrel, a cup in said tube enclosin the discharge end of the vacuum conduit an provided with ports, a valve in said cup for controlling the vacuum conduit and the cup ports, a stem on saidvalve, a head on said stem, and a collar on said tube in guiding relation 'to the stem and adapted for engaging the head, for the purpose set forth;

7. The combination with a source of vacuum, of a cylinder, a piston dividing the 'cylinder into separate fluid and vacuum chambers, and operable in one direction under influence of vacuum in the vacuum chamber, valved supply and feed conduits leading to and from the fluid chamber, a valve for connecting the vacuum chamber with atmosphere, a spring normally retaining the valve open and yieldable under influence of vacuum in the cylinder, a conduit connecting the cylinder with the vacuum sour e,- a barrel in and communicating with the vacuum chamber, a housing connected with the piston and slidable on the barrel, .a springin said housing bearing against the barrel and the piston -to urge the piston outwardly, a tube connected with the piston and slidable in the barrel, a cup in said tube and enclosing the discharge end of the vacuum. conduit and provided with ports, a valve in said cup for controlling the vacuum conduit and the cup ports, a stem on said valve, a head on ,said stem and a collar on said tube in guiding relation to the stem and adapted for engaging the head, and a spring in said cup for urging the valve to open-position.

8. In a device ofthe character described, the combination with an engine, of a liquid pump comprising a cylinder and a piston, motive means for normally holding thepiston in one direction, means operated by the engine creating a-difl'e-rential pressure in opposite directions on the piston with the greater pressure moving the piston against the motive means, and aipressure equalizing device equalizing the pressure in said cylinder independent of the engine whereby the piston is recipr'ocated by? the motive means and the differential pressures. v 9. In a device of the character described, the combination with an engine, of a liquid pump comprising a cylinder and a. piston, yielding means norma ly'moving the piston in one direction, means operated by the engine and creating a differential pressure on the piston in opposite directions with the greater pressure moving the piston against the yielding means, and a pressure equalizing device independent of the engine and operated by the piston whereby the piston is reciprocatedby the yielding means and the differential pressures.

10. In a device of the character described, the combinationwith an engine, of a liquid pump comprising a cylinder and a piston, a yielding means normally moving the piston in one direction, means operated by the engine and creating a differential pressure to overcome the yielding means, and a vent valve operated by the piston and equalizing' the pressure for the purpose described.

11. In a device of the character described, the combination with an engine, of a liquid pump comprising a cylinder and a piston, one end of the cylinder in communication with a liquid supply, means operated by the engine for creating differential pressure in opposite directions on the piston to cause it to move in one direction, means actuated by the piston and equalizing the said pressure, and means normally moving the piston in the other direction when the pressure is equalized.

12. In combination, a pumping piston, a motor piston, means connecting said pistons so that they may move together, a cylinder for each of said pistons, a suction pipe, a port between the. suction pipe and the motor cylinder at one side of the motor piston, an

atmospheric port communicating with the motor cylinder on the same side of the motor piston, valve mechanism associated with said ports for causing alternate preponderance of suction and of atmospheric pressure in the motor cylinder on that side of the motor piston, and a spring for making a stroke of the motor piston when atmospheric pressure preponderates.

13. In combination, a motor cylinder and a pump cylinder in substantially axial alignment, said' cylinders having heads at opposite ends to form two single ended cylinders opening toward and connected to each other, a motor piston for the motor cylinder, a pump piston for the pump cylinder, a stem connectingsaid pistons, a connection secured to the head of the pump cylinder, said connection having inlet and outlet check valves controlling the intake and discharge of fluid to and from the pump cylinder, a suction port and an atmospheric port commimicating with the motor cylinder at one side of the motor piston, valve mechanism associated with said ports for causing alternate of the motor piston, and a spring for mov ing the motor piston during the preponderance of atmospheric pressure.

14. I In combination, a. pump, a motor comprising a piston and a suitable cylinder,

means connecting said motor and pump, spring means acting upon said piston for making the outward stroke of the motor, a source of suction adapted to act on the piston for making the inward stroke of the motor, a suction port and an atmospheric port communicating wit-h the cylinder on the inward side of the piston, valve mechanism associated with said ports to cause alternate conditions of atmospheric pressure and a partial-vacuum in said cylinder on that side of the piston, which valve mechanism comprises a valve governing one of said ports, said piston having a recess therein, said valve having an operating stem projecting into said recess.

15. In combination, a pump, a motor comprising a piston and asuitable cylinder, means connecting said motor and pump, spring means acting upon said piston for making the outwardstroke of the motor, a

source of suction adapted to act on the piston for making the inward stroke of the motor, a suction port and an atmospheric port communicating with the cylinder on the inward side of the piston, valve means associated with said ports to cause alternate conditions of atmospheric pressure and a partial vacuum in said cylinder on that side of the piston, which valve means comprises a valve governing one of said ports and an operating stem for the valve lying within the cylinder and adapted to be actuated by the piston as the piston approaches the end of the stroke.

16. In combination, a cylinder, a piston for said cylinder, a suction port and an atmospheric port for said cylinder, a source of suction and a spring for making alternate strokes of said piston, valve means controlpiston, which valve means comprises a. valve provided with a stem lying within said cylinder and having a lost motion connection with said piston.

17. In combination, a cylinder, a piston for said cylinder, a suction port and an atmospheric port for said cylinder, a source of suction and a spring for making alternate strokes of said piston, valve means controlling the effective application of suction to said cylinder, which valve means comprises a valve provided with a stem lying within said cylinder and having a lost motion connection with said piston, and spring means for causing full opening movement of the valve after it is initially moved by the piston.

18. In combination, a cylinder, a piston for said cylinder, a suction port and an atmospheric port for said cylinder, a source of suction and a spring for making alternate strokes of said piston, valve means controlling the ettective application of suction to said cylinder, said valve means comprising a puppet valve opening away from suction, a connection between the valve and the piston, and means for completing the throw of the valve away from the port after it is initiall moved by the piston.

19. n combination, a motor cylinder, a piston, a source of suction adapted to be connected to said cylinder for making a stroke of the piston in one direction, a spring for making the return stroke of the piston, a valve adapted to be moved by the piston controlling the connection of said source of suction to the cylinder, a valve also adapted to be moved by the piston controlling the connection of the cylinder to the atmosphere, and a stem for operating one of the valves, said stem lying within the cylinder. 1

In testimony whereof I afiix my signature.

GEORGE B. MAEGLY. 

